noun Date: 1877 grain mash for brewing or distilling whose initial acidity has been adjusted to optimum condition for yeast fermentation by mash from a previous run
SOUR MASH
Meaning of SOUR MASH in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012